This new app will alert you if important people like Trump or Mark Cuban start tweeting about a publicly traded company

Trump meeting the leaders of big public tech companiesGetty/Drew Angerer

Public company stocks can swing wildly when Donald Trump tweets about them, and Wall Street analysts are increasingly paying attention to how social-media chatter interacts with the market.

One firm that helps Wall Street track the buzz on social networks is LikeFolio, which CNBC reported has had some success spotting turnarounds of companies like Chipotle and Under Armour.

Now LikeFolio is bringing some of that insight to everyone by releasing an app, with partner TD Ameritrade, that lets you track when market-moving celebrities tweet about public companies.

They aren't the first to have this idea. In January, Trigger, a free app that lets you track custom financial signals, released a feature which alerted you when Trump tweeted about one of your stocks. It also lets you track hundreds of other top Twitter accounts.

LikeFolio's take is similar, and lets you follow various influencers, or sets of them. Unfortunately, some are locked unless you are a TD Ameritrade customers. But the app itself is free.